CN110501284A - A kind of device and method for testing multiple tube bond strength under hot loading environment - Google Patents
A kind of device and method for testing multiple tube bond strength under hot loading environment Download PDFInfo
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- CN110501284A CN110501284A CN201910815840.6A CN201910815840A CN110501284A CN 110501284 A CN110501284 A CN 110501284A CN 201910815840 A CN201910815840 A CN 201910815840A CN 110501284 A CN110501284 A CN 110501284A
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Abstract
A kind of device and method for testing multiple tube bond strength under hot loading environment belongs to multiple tube bond strength technical field of performance test.Including high-intensitive pressure-bearing frame, pressure system, heater incubator, adjustable support；Pressure system is fixed in high-intensitive pressure-bearing frame；Variable diameter pressure head is inserted into heater incubator, multiple tube to be tested is placed on variable diameter pressure head, inner tube lower end face contact of the upper surface of variable diameter pressure head with multiple tube to be tested, heater incubator box height is substantially flush with test pipeline section upper surface, cover heating and thermal insulation box cover, heating and thermal insulation box cover is contacted with high strength frame, outer tube upper end face contact of the lower surface of heating and thermal insulation box cover with multiple tube to be tested；Heater incubator power supply is opened, required test temperature is warming up to, temperature is kept the temperature after stablizing, on-load pressure, and observation pressure change illustrates that multiple tube has occurred that failure by shear when pressure, which reaches maximum value, to be started to be decreased obviously, and records the pressure value of this process.
Description
Technical field
The present invention relates to multiple tube bond strength technical field of performance test, in particular under a kind of hot loading environment of test
The device and method of multiple tube bond strength.
Background technique
Multiple tube be made of the material of two or more different performance there is double-deck or multilayered structure answer
Tubing is closed, it can the environment according to application and the performance requirement progress multiple tube material system to tubing and production in engineer application
The selection and design of technique can realize the mutual supplement with each other's advantages of material to the maximum extent, on the basis of guaranteeing pipeline basic performance,
The corrosion resistance for improving pipeline extends the service life of pipeline, reduces engineering cost, tends to substitute pure stainless steel tube, copper
Pipe or other expensive compo pipes.Current various multiple tubes are led in oil development, chemical industry, metallurgy, ship, mine, military project etc.
Domain obtains extensive application.
Bond strength is a most important technical indicator for evaluating combined pipe performance.Currently, different classes of compound
The specific requirement and test method of bond strength are had been presented in the relevant criterion of pipe, such as in GB/T28897 " steel plastic compount
Pipe ", SY/T 6855 " contains H2S/CO2Gas field collection transmission pipe network composite bimetal pipe ", SY/T 6662.8-2016 is " in ceramics
Bushing pipe and pipe fitting " etc. the bond strength of multiple tube has been done in standards and requires and give the schematic diagram of test.These standards
All it is to require the bond strength of multiple tube at room temperature, has ignored temperature to by different thermal expansion coefficient material system structure
At multiple tube caused by bond strength influence, to instruct multiple tube under hot loading condition application Shortcomings in place of,
Easily cause production accident and security risk.
Summary of the invention
To solve above-mentioned deficiency, the present invention provides the realities that one kind can test multiple tube bond strength under hot loading environment
Experiment device and method, experimental method is simple, and experimental provision structure is simple, flexible operation, tests quicklook.
In order to achieve the above objectives, the invention is realized by the following technical scheme:
A kind of device for testing multiple tube bond strength under hot loading environment is divided into four parts: high-intensitive pressure-bearing frame
(1), pressure system (2), heater incubator (3), adjustable support (4)；
High-intensitive pressure-bearing frame (1) is used to bear the load of entire test macro, and high-intensitive pressure-bearing frame is body structure,
Top is provided with through-hole (1-2), is used for observation experiment process, it may also be used for adjustment sample position；
Pressure system (2) bottom is fixed on the base portion in high-intensitive pressure-bearing frame 1, combines for producing and exporting test
The pressure of intensity；Pressure system includes successively from top to bottom component variable diameter pressure head (2-2), pressure head (2-3), can apply stressed cylinder
Body (2-4), pedestal (2-5), pedestal (2-5) are fixed on the bottom of pressure system 2, and cylinder body (2-4) is aobvious equipped with high accuracy number
Show pressure gauge (2-6) and load controller (2-7)；Variable diameter pressure head (2-2) is cylindrical structure, and upper end diameter is relatively small,
Lower end surface diameter is relatively large, and according to the suitable variable diameter indenter size of multiple tube selection of dimension, end surface is directly and multiple thereon
The inner tube end face contact for closing pipe test specimen, for inner tube on-load pressure, variable diameter pressure head (2-2) lower end surface to be equipped with cylindrical guidance
Face groove (2-8) cooperates for stablizing with cylindrical pressure head (2-3)；Cylindrical pressure head (2-3) top and variable diameter pressure head
Cylindrical guide sur-face groove (2-8) cooperation is used for the knot that conducting pressure is contacted to test specimen, pressure head (2-3) top with variable diameter pressure head
Conjunction face place is equipped with heat insulating mattress (2-9), for reducing thermal loss, reduces the heat for being transmitted to pressure system, protects pressure system
System；High accuracy number shows pressure gauge (2-6), for the pressure value for reading pressure system transmitting of quicklook, reading
Unit is MPa, Psi, KN etc..
Heater incubator (3) is located at high-intensitive pressure-bearing frame (1) inner upper end, for Compound pipe to be tested to be heated to
Assigned temperature, and test is completed at this temperature；Including heating and thermal insulation box body (3-2), heating element (3-3), heat-insulation and heat-preservation
Layer (3-4), heating and thermal insulation box cover (3-5), temperature sensor (3-6), digital display thermometer and temperature regulating device (3-7), add
Hot incubator power supply (3-8)；Heating and thermal insulation box body (3-2) is used to carry other components of heater incubator, heater incubator
The lower part cabinet (3-2) is placed on adjustable support (4), and for fixing heater incubator, adjustable support (4) is located at high intensity
In pressure-bearing frame (1)；Insulating (3-4) setting is kept in heater incubator interior for preventing heat loss
Box interior temperature；Heating element (3-3) is located inside heating and thermal insulation box body (3-2) for heating；Heating and thermal insulation box cover
(3-5) sampling upper cover connecting pin (3-10) is cooperated with heating and thermal insulation box body upper port, on heating and thermal insulation box cover (3-5)
Surface is bonded with high-intensitive pressure-bearing frame, the pressure that sample upper outer layer end surfaces generate when for bearing test, heating and thermal insulation
Box cover (3-5) is provided with through-hole (3-13), and various sizes of sample selects the heating and thermal insulation box cover of different clear size of opening, heating
The through hole plug (3-11) that heat-insulation and heat-preservation is equipped at heat preservation box cover through-hole (3-13) avoids thermal loss for sealing upper cover；Add
Equipped with temperature sensor (3-6), digital display thermometer and automatic temp controller (3-7) and temperature in hot thermal insulation box body (3-2)
Sensor (3-6) and heating element (3-3) connection and cooperation are spent, for intuitively reading the temperature in heater incubator, works as temperature
When degree reaches set temperature, temperature regulating device control heating element is automatically powered off, and temperature heats automatically when reducing, and guarantees the temperature inside the box
It is constant；
3 bottom of heater incubator is provided with through-hole (3-12), extend into heater incubator for variable diameter pressure head upper end；
Through-hole (3-12) inner sidewall is equipped with one layer of flexible heat-insulating heat-preserving material (3-9), for sealing variable diameter pressure head and heating and thermal insulation cabinet
Gap, flexible heat-insulating heat-preserving material should be able to adapt to the size of different variable diameter pressure heads, prevent heat between variable diameter pressure head and hole
Gap is scattered and disappeared, and will not influence test result；
High-intensitive pressure-bearing frame (1) top is equipped with through-hole, and the through-hole diameter on high-intensitive pressure-bearing frame (1) top, which is not less than, to be added
Heat keeps the temperature box cover through-hole (3-13) and the two is coaxial；The diameter of heating and thermal insulation box cover through-hole (3-13) is greater than multiple tube to be measured
Outer tube interior diameter be less than outer tube overall diameter；Variable diameter pressure head (2-2) upper end diameter is greater than straight in the inner tube of multiple tube to be measured
Diameter is less than inner tube overall diameter.
Adjustable support 4 is fixed on inside high-intensitive pressure-bearing frame 1, for being supported and fixed in a manner of height-adjustable
Heater incubator (3).
Pressure head (2-3) is that can continue to increase along variable diameter pressure head (2-2) axis direction for adjusting height, cylinder body (2-4)
Pressure apparatus.
Experimental method is as follows: pressure system is fixed in high-intensitive pressure-bearing frame, is selected according to compound pipe size to be tested
Select applicable variable diameter pressure head；Variable diameter pressure head is inserted into heater incubator by heater incubator lower opening, by multiple tube to be tested
It is placed on variable diameter pressure head and adjusts, so that variable diameter pressure head and multiple tube to be tested are coaxial, the upper surface of variable diameter pressure head is only
With the inner tube lower end face contact of multiple tube to be tested, adjusting heater incubator support height makes heater incubator box height and surveys
Test tube section upper surface is substantially flush, and covers heating and thermal insulation box cover, and upper cover fixed pin is embedded in pin hole, slowly increases pressure system
Fall head, until heating and thermal insulation box cover is gently contacted with high strength frame, while the lower surface of heating and thermal insulation box cover is only
With the outer tube upper end face contact of multiple tube to be tested；Adjustment heater incubator support height makes it support heater incubator；It opens
Heater incubator power supply is at the uniform velocity warming up to required test temperature, and temperature keeps the temperature 15-30 minutes after stablizing, and pressure system starts
Slow upward on-load pressure, observation pressure change illustrate that multiple tube has been sent out when pressure, which reaches maximum value, to be started to be decreased obviously
Failure by shear has been given birth to, the pressure value of this process is recorded, has passed through the binding force of maximum value calculation multiple tube.
The pressure system pressure head passes through heat treatment process, obtains higher hardness and toughness, it is ensured that in course of exerting pressure not
It can deform and rupture.
The pressure system is equipped with high accuracy number and shows pressure gauge, is capable of the reading pressure value of quicklook, presses
The adjustable readout units of power table are MPa, Psi, KN etc., meet different reading demands.
The variable diameter pressure head can be equipped with cylindrical guide sur-face according to multiple tube selection of dimension, variable diameter pressure head bottom, guarantee
Variable diameter pressure head and stablizing for pressure head cooperate, it is ensured that the accuracy of experiment.
The faying face contacted at the top of the pressure head with variable diameter pressure head is equipped with heat insulating mattress, reduces the thermal loss of incubator,
Protect pressure system.
The heater incubator is equipped with automatic temp controller, and inside is equipped with heating element, is equipped with temperature sensor in case, when
When temperature reaches set temperature, heating element is automatically powered off, and temperature heats automatically when reducing, and guarantees that the temperature inside the box is constant.
The heater incubator temperature can cover most works of current engineer application in room temperature to adjusting in 1000 DEG C
Condition condition.
The heater incubator is equipped with digital display thermometer, can intuitively read the temperature in case.
The heater incubator is equipped with the movable top lid of pin connection, and installation test pipeline section and maintenance of equipment, upper cover is facilitated to open
There are through-hole, and the through hole plug of mating heat-insulation and heat-preservation, the size of the upper cover through-hole test pipeline section closely related, different with test pipeline section
Select different upper covers.
The heating and thermal insulation chamber interior wall is equipped with one layer of heat-insulating heat-preserving material, avoids thermal loss in case.
The heater incubator bottom is provided with through-hole, and hole inner wall is equipped with one layer of flexible heat-insulating heat-preserving material, can adapt to not
With the size of variable diameter pressure head, heat is prevented to scatter and disappear from the gap in variable diameter pressure head and hole, and will not influence test result.
The high intensity pressure-bearing frame is welded using high strength alloy steel, and it is indeformable to bear larger pressure.
The heating and thermal insulation box bracket can arbitrarily adjust height, provide stable support for heater incubator.
The high intensity pressure-bearing frame is welded using high strength alloy steel, and it is indeformable to bear larger pressure.
The pressure system pressure head (2-3) and variable diameter pressure head (2-2) cooperation, need to be through Overheating Treatments for transmitting test pressure
Etc. process, to obtain higher hardness and toughness.
Beneficial effects of the present invention are as follows:
1. test method of the present invention has fully taken into account the practical application operating condition of composite pipe, test result is multiple for instructing
The engineer application for closing tubing has realistic meaning.
2. temperature controlling range of the present invention is big, most working conditions of current engineer application are covered.
3. the present invention has filled up the blank that multiple tube bond strength is tested under hot loading environment.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of multiple tube bond strength device under the hot loading environment of test
Attached drawing 2 is high-intensitive pressure-bearing frame top view
Attached drawing 3 is the heater incubator top view for not installing pipe fitting
1. high-intensitive pressure-bearing frame；1-2. pressure-bearing frame through-hole；2. pressure system；2-2. variable diameter pressure head；2-3. pressure head；2-
4. cylinder body；2-5. pedestal；2-6. high accuracy number shows pressure gauge；2-7. loads controller；2-8. cylindrical guide sur-face groove；
2-9. heat insulating mattress；3. heater incubator；3-2. heating and thermal insulation box body；3-3. heating element；3-4. insulating；3-5.
Heating and thermal insulation box cover；3-6. temperature sensor；3-7. thermometer and temperature regulating device；3-8. heater incubator power supply；3-9. soft
Property heat preserving and insulating material；3-10. upper cover connecting pin；3-11. upper cover keeps the temperature through hole plug；3-12. heater incubator lower through-hole；3-
13. through-hole on heater incubator；4. adjustable support；5. testing Compound pipe outer tube (layer)；6. testing Compound pipe inner tube
(layer).
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and detailed description.
As shown in Figure 1, the experimental rig that the present invention uses includes high-intensitive pressure-bearing frame 1；Pressure system 2, specifically includes
Variable diameter pressure head 2-2, pressure head 2-3, cylinder body 2-4, pedestal 2-5, high-precision digital-display pressure gauge 2-6, load controller 2-7, heat insulating mattress
Piece 2-9；Heater incubator 3 specifically includes heating and thermal insulation box body 3-2, heating element 3-3, insulating 3-4, heating guarantor
Incubator upper cover 3-5, temperature sensor 3-6, thermometer and temperature regulating device 3-7, heater incubator power supply 3-8, flexible heat-insulating it is heat-insulated
Material 3-9, upper cover connecting pin 3-10, upper cover keep the temperature through hole plug 3-11；The composition such as adjustable support 4.
High-intensitive pressure-bearing frame 1 is used to bear the load of entire test macro, and pressure-bearing frame top is provided with through-hole 1-2, uses
In observation experiment process, it may also be used for adjustment sample position.2 bottom of pressure system is fixed on high-intensitive 1 lower part of pressure-bearing frame, uses
In the pressure for producing and exporting test bond strength.According to the applicable variable diameter pressure head 2-2 of the parameter selection of test test specimen；By adding
Variable diameter pressure head 2-2 is inserted into heater incubator 3 by hot incubator lower opening 3-12, and test Compound pipe is placed in variable diameter pressure head 2-
On 2 and test pipeline section center is adjusted, adjustment 4 height of adjustable support makes heating and thermal insulation box body 3-2 height and test pipeline section
Upper surface is substantially flush, and covers heating and thermal insulation box cover 3-5, and upper cover fixed pin 3-10 is embedded in pin hole, slowly increases pressure head 2-3
Highly, until heating and thermal insulation box cover 3-5 is gently contacted with high strength frame 1, adjustment 4 height of adjustable support makes its support heating
Incubator；Heater incubator power supply 3-8 is opened, required test temperature is warming up to, temperature keeps the temperature 15-30 minutes after stablizing, and controls
System load controller 2-7 starts Slow loading, observation pressure gauge 2-6 reading variation, when pressure reaches maximum value and declines suddenly
When, illustrate that multiple tube has occurred that failure by shear, records the pressure value of this process.
The pressure system 2 includes variable diameter pressure head 2-2, pressure head 2-3, cylinder body 2-4, pedestal 2-5 and high-precision digital-display pressure
Table 2-6 and load controller 2-7.
Variable diameter pressure head 2-2 and pressure head 2-3 in the pressure system 2, be into for directly to test sample on-load pressure
Row respective handling obtains high rigidity and high tenacity, it is ensured that will not deform and rupture in course of exerting pressure.
High accuracy number in the pressure system 2 shows pressure gauge 2-6, for the reading pressure value of quicklook,
The adjustable readout units of pressure gauge are MPa, Psi, KN etc., meet different reading demands, can also pass through pressure value, the face of pressure head
The parameters such as product, realize the conversion of different unit amounts, to meet different calculating demands.
The variable diameter pressure head 2-2 can choose according to test sample dimensions, and the variable diameter bottom pressure head 2-2 is equipped with cylindrical guidance
Face 2-8, for guiding the cooperation of variable diameter pressure head and pressure head, it is ensured that the accuracy of experiment.
The faying face contacted at the top of the pressure head 2-3 with variable diameter pressure head 2-2 is equipped with heat insulating mattress 2-9, for reducing heat preservation
The thermal loss of case reduces the heat for being transmitted to pressure system, protects pressure system.
The heater incubator 3 is equipped with digital display thermometer and automatic temp controller (3-7), and inside is equipped with heating element
3-3 is equipped with temperature sensor 3-6 in case, for intuitively reading the temperature in case, and when temperature reaches set temperature, control
Warm device can control heating element and automatically power off, and temperature regulating device can control heating element and heat automatically when temperature reduces, and protect
It is constant to demonstrate,prove the temperature inside the box.
The heater incubator 3 is equipped with the movable top lid 3-5 of pin 3-10 connection, for carrying pressure, installation being facilitated to test
Pipeline section and maintenance of equipment, upper cover are provided with through-hole 3-13, and for observing testing tube fragment position and test mode, upper cover through-hole 3-13 matches
There is the through hole plug 3-11 of heat-insulation and heat-preservation, for sealing upper cover in heating and insulating process, avoids thermal loss.Upper cover through-hole 3-13
Size and test pipeline section it is closely related, different test pipeline sections will select different upper cover 3-5.
3 inner wall of heater incubator is equipped with one layer of heat-insulating heat-preserving material 3-4, for avoiding thermal loss in case.
3 bottom of heater incubator is provided with through-hole 3-12, and hole inner wall is equipped with one layer of flexible heat-insulating heat-preserving material 3-9, uses
In the size for adapting to different variable diameter pressure heads, heat is prevented to scatter and disappear from the gap in variable diameter pressure head and hole, and will not influence test knot
Fruit.
The high intensity pressure-bearing frame 1 is welded using high strength alloy steel, and it is indeformable to bear larger pressure.
The heating and thermal insulation box bracket 4 can arbitrarily adjust height, provide stable support for heater incubator.
Only tens kilograms of weight of experimental rig of the whole series of the invention, can arbitrarily carry, and can operate as long as there is the place of power supply,
Meet different tests demand.
Embodiment 1: bond strength of test composite bimetal pipe under the conditions of 300 DEG C
(1) test section prepares: interception 20mm long,Pair of the compound 3mm stainless steel tube of 51mm carbon steel pipe
Metal composite pipe, compound bore are 56mm, and multiple tube faying face diameter is 62mm.(2) test accessory is chosen: choosing diameter
The variable diameter pressure head of 60mm；(3) test assembling: variable diameter pressure head and pressure head are assembled, middle pad heat insulating mattress；By variable diameter pressure head and add
Hot incubator is assembled by bottom through-hole；Test section is adjusted into center, is placed on variable diameter pressure head, guarantees that stainless steel layer is equal
It is fallen on variable diameter pressure head evenly；Adjustment heater incubator height keeps cabinet upper limb concordant with pipeline section upper surface；It covers on incubator
Lid, upper cover fixed pin are embedded in pin hole；Fall head is slowly increased, until heating and thermal insulation box cover gently connects with high strength frame
Touching, adjustment heater incubator support height make it support heater incubator；After exact p-value pipeline section position is without offset, upper cover beyond the Great Wall
Keep the temperature through hole plug；(4) test heating: opening heater incubator power supply, is at the uniform velocity warming up to 300 DEG C, temperature keeps the temperature 20 points after stablizing
Clock；(5) pressure testing: adjustment pressure gauge reading unit, Slow loading are observed pressure change, are started when pressure reaches maximum value
When being decreased obviously, illustrate that multiple tube has occurred that failure by shear, record pressure value (6) off-test of this process: disassembly is set
It is standby, test section, measurement and record related data are taken out, photo or video data are left and taken, multiple tube is calculated according to relevant criterion
Bond strength.
Above-mentioned test is repeated in specific test, takes multiple averaging value as final testing result.
Embodiment 2: bond strength of test cermet composite oil pipe under the conditions of 500 DEG C
(1) test section prepares: interception 20mm long,The gold of the compound 3mm cermet coating of carbon steel pipe
Belong to ceramic composite pipe, compound bore is 70mm, and multiple tube faying face diameter is 76mm.(2) test accessory is chosen: choosing diameter
The variable diameter pressure head of 75mm；(3) test assembling: variable diameter pressure head and pressure head are assembled, middle pad heat insulating mattress；By variable diameter pressure head and add
Hot incubator is assembled by bottom through-hole；Test section is adjusted into center, is placed on variable diameter pressure head, guarantees that ceramic layer is uniform
Ground is fallen on variable diameter pressure head；Adjustment heater incubator height keeps cabinet upper limb concordant with pipeline section upper surface；Heat preservation box cover is covered,
Upper cover fixed pin is embedded in pin hole；Fall head is slowly increased, until heating and thermal insulation box cover is gently contacted with high strength frame, is adjusted
Whole heater incubator support height makes it support heater incubator；After exact p-value pipeline section position is without offset, upper cover is kept the temperature beyond the Great Wall
Through hole plug；(4) test heating: opening heater incubator power supply, is at the uniform velocity warming up to 500 DEG C, temperature keeps the temperature 30 minutes after stablizing；
(5) pressure testing: adjustment pressure gauge reading unit, Slow loading are observed pressure change, are started obviously when pressure reaches maximum value
When decline, illustrate that multiple tube has occurred that failure by shear, records the pressure value of this process；(6) off-test: detaching equipment,
Test section, measurement and record related data are taken out, photo or video data are left and taken, multiple tube is calculated according to relevant criterion and is combined
Intensity.
Above-mentioned test is repeated in specific test, takes multiple averaging value as final testing result.
Claims (7)
1. a kind of device for testing multiple tube bond strength under hot loading environment, which is characterized in that be divided into four parts: high-intensitive
Pressure-bearing frame (1), pressure system (2), heater incubator (3), adjustable support (4)；
High-intensitive pressure-bearing frame (1) is used to bear the load of entire test macro, and high-intensitive pressure-bearing frame is body structure, top
It is provided with through-hole (1-2), is used for observation experiment process, it may also be used for adjustment sample position；
Pressure system (2) bottom is fixed on the base portion in high-intensitive pressure-bearing frame (1), combines by force for producing and exporting test
The pressure of degree；Pressure system includes successively from top to bottom component variable diameter pressure head (2-2), pressure head (2-3), can apply stressed cylinder body
(2-4), pedestal (2-5), pedestal (2-5) are fixed on the bottom of pressure system 2, and cylinder body (2-4) is equipped with high accuracy number and shows
Pressure gauge (2-6) and load controller (2-7)；Variable diameter pressure head (2-2) is cylindrical structure, and upper end diameter is relatively small, under
End surface diameter is relatively large, according to the suitable variable diameter indenter size of multiple tube selection of dimension, thereon end surface directly with it is compound
The inner tube end face of pipe test specimen contacts, for inner tube on-load pressure, variable diameter pressure head (2-2) lower end surface to be equipped with cylindrical guide sur-face
Groove (2-8) cooperates for stablizing with cylindrical pressure head (2-3)；The circle at cylindrical pressure head (2-3) top and variable diameter pressure head
Cylindricality guide surface groove (2-8) cooperation is used for the combination that conducting pressure is contacted to test specimen, pressure head (2-3) top and variable diameter pressure head
It is equipped with heat insulating mattress (2-9) at face, for reducing thermal loss, the heat for being transmitted to pressure system is reduced, protects pressure system；
High accuracy number shows pressure gauge (2-6), the pressure value for reading pressure system transmitting for quicklook；
Heater incubator (3) is located at high-intensitive pressure-bearing frame (1) inner upper end, for Compound pipe to be tested to be heated to specifying
Temperature, and test is completed at this temperature；Including heating and thermal insulation box body (3-2), heating element (3-3), insulating (3-
4), heating and thermal insulation box cover (3-5), temperature sensor (3-6), digital display thermometer and temperature regulating device (3-7), heating and thermal insulation
Case power supply (3-8)；Heating and thermal insulation box body (3-2) is used to carry other components of heater incubator, heating and thermal insulation box body (3-
2) lower part is placed on adjustable support (4), and for fixing heater incubator, adjustable support (4) is located at high-intensitive pressure-bearing frame
In frame (1)；Insulating (3-4) setting is kept in cabinet in heater incubator interior for preventing heat loss
Portion's temperature；Heating element (3-3) is located inside heating and thermal insulation box body (3-2) for heating；Heating and thermal insulation box cover (3-5) is adopted
Sample upper cover connecting pin (3-10) is cooperated with heating and thermal insulation box body upper port, the heating and thermal insulation box cover upper surface (3-5) with
High-intensitive pressure-bearing frame fitting, the pressure that sample upper outer layer end surfaces generate when for bearing test, heating and thermal insulation box cover
(3-5) is provided with through-hole (3-13), and various sizes of sample selects the heating and thermal insulation box cover of different clear size of opening, heater incubator
Through hole plug (3-11) at upper cover through-hole (3-13) equipped with heat-insulation and heat-preservation avoids thermal loss for sealing upper cover；Heating and thermal insulation
Temperature sensor (3-6), digital display thermometer and automatic temp controller (3-7) and temperature sensing are equipped in box body (3-2)
Device (3-6) and heating element (3-3) connection and cooperation, for intuitively reading the temperature in heater incubator, when temperature reaches
When set temperature, temperature regulating device control heating element is automatically powered off, and temperature heats automatically when reducing, and guarantees that the temperature inside the box is constant；
3 bottom of heater incubator is provided with through-hole (3-12), extend into heater incubator for variable diameter pressure head upper end；Through-hole
(3-12) inner sidewall is equipped with one layer of flexible heat-insulating heat-preserving material (3-9), for sealing between variable diameter pressure head and heating and thermal insulation cabinet
Gap, flexible heat-insulating heat-preserving material should be able to adapt to the size of different variable diameter pressure heads, prevent heat from dissipating from the gap in variable diameter pressure head and hole
It loses, and will not influence test result；
High-intensitive pressure-bearing frame (1) top is equipped with through-hole, and the through-hole diameter on high-intensitive pressure-bearing frame (1) top is protected not less than heating
Incubator upper cover through-hole (3-13) and the two is coaxial；The diameter of heating and thermal insulation box cover through-hole (3-13) is greater than the outer of multiple tube to be measured
Pipe interior diameter is less than outer tube overall diameter；The inner tube interior diameter that variable diameter pressure head (2-2) upper end diameter is greater than multiple tube to be measured is small
In inner tube overall diameter.
2. a kind of device for testing multiple tube bond strength under hot loading environment described in accordance with the claim 1, which is characterized in that
Adjustable support 4 is fixed on inside high-intensitive pressure-bearing frame 1, for supporting and fixing heating and thermal insulation in a manner of height-adjustable
Case (3).
3. a kind of device for testing multiple tube bond strength under hot loading environment described in accordance with the claim 1, which is characterized in that
Pressure head (2-3) is that can continue to increase pressure apparatus along variable diameter pressure head (2-2) axis direction for adjusting height, cylinder body (2-4).
4. a kind of device for testing multiple tube bond strength under hot loading environment described in accordance with the claim 1, which is characterized in that
The heater incubator is equipped with automatic temp controller, and inside is equipped with heating element, temperature sensor is equipped in case, when temperature reaches
When set temperature, heating element is automatically powered off, and temperature heats automatically when reducing, and guarantees that the temperature inside the box is constant.
5. a kind of device for testing multiple tube bond strength under hot loading environment described in accordance with the claim 1, which is characterized in that
The heater incubator temperature can cover most working conditions of current engineer application in room temperature to adjusting in 1000 DEG C.
6. a kind of device for testing multiple tube bond strength under hot loading environment described in accordance with the claim 1, which is characterized in that
The high intensity pressure-bearing frame is welded using high strength alloy steel.
7. using the method for device to test multiple tube bond strength described in any one of claims 1-6, which is characterized in that experiment
Method is as follows: pressure system is fixed in high-intensitive pressure-bearing frame, the variable diameter being applicable according to multiple tube size selection to be tested
Pressure head；Variable diameter pressure head is inserted into heater incubator by heater incubator lower opening, multiple tube to be tested is placed in variable diameter pressure
On head and adjust so that variable diameter pressure head and multiple tube to be tested are coaxial, the upper surface of variable diameter pressure head only with it is to be tested compound
The inner tube lower end face contact of pipe, adjustment heater incubator support height make heater incubator box height and test pipeline section upper surface
It being substantially flush, covers heating and thermal insulation box cover, upper cover fixed pin is embedded in pin hole, the fall head of pressure system is slowly increased,
Gently contacted to heating and thermal insulation box cover with high strength frame, at the same the lower surface of heating and thermal insulation box cover only with it is to be tested compound
The outer tube upper end face contact of pipe；Adjustment heater incubator support height makes it support heater incubator；Open heater incubator electricity
Source is at the uniform velocity warming up to required test temperature, and temperature keeps the temperature 15-30 minutes after stablizing, and pressure system starts slowly load upwards
Pressure observes pressure change, when pressure, which reaches maximum value, to be started to be decreased obviously, illustrates that multiple tube has occurred that shearing is broken
It is bad, the pressure value of this process is recorded, the bond strength of maximum value calculation multiple tube is passed through.
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| CN113211047A (en) * | 2020-12-01 | 2021-08-06 | 北京清大天达光电科技股份有限公司 | Pressing device capable of accurately controlling temperature and pressure |
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| CN110501284B (en) | 2021-10-01 |
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